Technician’s Handbook
188
For all the situations where Extension Group 0 is used
the call should go to the attendant (backstop) if there is
no Extension Group 0 defined.
Mov Mov
Call rings first element in Group
Cyclic Ring Timer Expires; Call moves to next element in Group.
This is repeated till the last element in the group is rung.
Cyclic Ring Timer Expires; Call rings all elements in Group
Cyclic Ring Timer Expires; Call moves to first element in Overflow
Group
Cyclic Ring Timer Expires; Call moves to next element in Group.
This is repeated till the last element in the group is rung.
Cyclic Ring Timer Expires; Call rings all elements in Group
Cyclic Ring Timer Expires; Call moves to Extension Group 0
Table 19: DID (NA) and DDI (UK) operation (continued)
Target Overflow Call progression
3100 Hand.bk Page 188 Monday, August 19, 2002 8:49 PM
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